package thread;

import java.util.concurrent.locks.ReentrantLock;

public class Demo32 {
    public static int total = 0;

    public static void main(String[] args) throws InterruptedException {
        ReentrantLock locker = new ReentrantLock(true);

        Thread t1 = new Thread(new Runnable(){
            public void run(){
                for(int i = 0;i<5000;i++){
                    locker.lock();
                    try{
                        total++;
                    }finally{
                        locker.unlock();
                    }
                }

            }
        });

        Thread t2 = new Thread(new Runnable(){
            public void run(){
                for(int i = 0;i<5000;i++){
                    locker.lock();
                    try{
                        total++;
                    }finally{
                        locker.unlock();
                    }
                }

            }
        });

        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println(total);
    }
}
